I’ve been using them for more than 6 months with no issues. But, not running from an SD card, this is using the Yocto OS running from flash with UDP packet forwarder.

I will have a go at running the loraserver OS on flash at some point. I wouldn’t want to run it from an SD card.

Having said that, I have a Raspberry Pi based gateway which has been running off an SD card for well over a year. But it’s only been rebooted a couple of times, in my experience it’s when you are rebooting frequently you’ll have problems with SD cards. I have used R-Pis for wallboard applications which get powered down every night and found they will need a total reinstall every now and then.